Improvement in plows



M LAFLIN & E. SLOSSON.

. PLOW.

No. 104,166 Patented June 14, 1870.

Wilma/5 66' MATTHEWLAFLIN AND ENOS SLOSSON, OF OHIOAGQILLINOIS,ASSIGNORS TO MATTHEW 'LAFLIN.

Letters Patent No. 104,166, dated- June 14, 1870.

' IMPROVEMENT, IN 'PLQWS.

The "Schedulereferfed to in these Letters Patent and-making part of thesame.

To whom tt'may concern We, MATTHEW LAFL N and Enos SLo'ssoN, of the cityof Ohicago, in the county of Cook, in the State of Illinois, haveinvented new and useful Improvements in Flows; and ivehereby declarethat the following is a full and exact description thereof, ref-, ereneebeing bad to the accompanying drawings and to the letters of referencemarked thereon.

The object of this invention is to construct the metal frame of a plowinsuch manner as that a mold-board made of glass, steel, or' othermetallic substance or compound, will have an even and solid bearing atall points of its support on the metal frame; and

It consists in the so forming the metal frame by casting or otherwisemaking a groove or hollow space or spaces therein, and fillingthe saidhollow space-or spaces with any plastic substance, such as plaster ofParis, prepared India rubber, or any other suitable elastic or plasticmaterial which will preserve a suitable bed or bearing for the glassmold-board to be bedded upon, and thus have an even hearing at allpoints of the mold-board; and

It consists, further, in the manner of holding or securing themold-board in its place in the frame of the plow..

Glass mold-boards have been used in plows; but, as commonly secured inthe frames, are liable to break, by reason of the want of a perfecthearing at all parts of the mold-hoard upon the frame, as in casting theframe it may not be perfectfih' itsshape, by reason of warping orspringing, after'being cast, in the process of cooling, or the glassmold-board may not be perfect in shape to fit the frame, and have aneven bearing; hence the want of a remedy for these heretofore defects,and save in use the glass mold-boards that, under the former method ofbedding on the metal frame alone, would be liable to be broken. Figure 1in the drawings represents the metal frame ofa plow, and v Figure 2. isan upright cross-section of the same. A represents the frame whichsupports the moldboard. v

A is the standard and landside of the frame.

The frame A is constructed, on the side to which the mold-board isapplied, to have a bearing to receive said mold-board upon, and themiddle or central part D is open, in order to give a better bed for theglass mold-board to rest upon near its extreme edges.

Such bearings in the frame are grooved or hollowed out, as seen in fig.2, at B, which grooves, hollows, or spaces, are filled with any suitableplastic or elastic material, C, to give a firm and even bed to the glassmold-board B at the points 0 c c 0', so that the moldboard will have aneven bed at all parts of its bearing up the frame A, andnot be liable tobreak when pressure comes upon itsoute'r or face side.

to the mold-board.

cut, is-

The hollow or space 13' in frame A may be divided into smaller hollowsor corrugations, which may go transversely across-the mold-board, orthey may be constructed on radial of concentric lines, as the fancy ofthe maker may dictate, without departing from our invention, as theobject is to give a sufficient space for the plastic or elasticmaterial, and at the same time to hold it in its place, and give thenecessary bed I) b are lugs cast on frame'A, at the upper andlowerforward angles of said frame, and have dovetailed or uuderbeveled sidesnext the mold-board B, as seen in dotted'lines in fig. 1. p

The glass mold-board 15 is made in form to correspond with frame A, andhas its forward end, upper and .lowerangles, made beveling, to fit inand be held in place by the beveled sides of lugs I) l) and'breast ofthe frame A, as seen in fig. l.

b is a metal clasp placed nearthe upper edge of the heel 'of themold-board, its forward edge not proj ecting far enough to be even withthe face of the-moldhoard, and is-bent at such an angle as to goto theinner side of the frame, and is held in its place by a screw-bolt.

Other means for holding this clamp may be used, but this weconsider thebest.

VVhe'n the forward parts of the glass mold-board are shaped and beveledto fit the lugs 1) li and' the breast of the frame at a, and the hollowor space 2B filled with the plastic or elastic material 0, to fit theback of the glass mold-board at all parts equally alike, andthemold-board'in its position, clamp J) is then put in its place, and tl1escrew-bolt(or other means of attaching the clamp to the frame) isscrewed home, and the mold-board is securely fastened, and will not beeasily displaced. This method of bedding and holding the mold-board inplace is simple, easily applied, and as easy to take the.mold-board-away. whenever necessary, as but a single screw-bolt is to beturnedv out to release the mold-board or fasten it in its place wheneverrequired.

The'usual lugs to a project from the lower/part of frame A below thebottom edge of the molddioard, and to which the share is bolted orsecured.

Having thus described our invention,

What we claim, and desire to secure by Letters Pat- 1 The metal frame A,having the hollow or space 13' therein, for the purpose substantially asdescribed. .2. The mode of bedding the mold-board B int-he metal frameA, as herein described and for the pur poses set forth. MATTHEW LAFLIN.'Witnesses: ENDS SLOSSON.

LYCUBGUS LAFLIN, S. P. BOUNDS.

